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(No Model.) 2 Sheets- S heet 1. W. B. TREMAINE 8; R. W. PAIN. MECHANICALMUSICAL INSTRUMENT. No. 552,796. Patented Jan. 7,, 1896.

\ \l w & 8 \x if Q U AN DREW EORAMAM. PHOTGUTMQWASHINGTDN. 0.0

(No Model.) 2 Sheets-Sheet 2. W. B, TEE-MAINE & R. W.'PAIN.

MECHANICAL MUSICAL INSTRUMENT.

No. 552,796. Patented Jan. 7, 1896.

AN DREW RBI-"MAM. PHOTD-UTHQWASNINGTOKEC.

UNiTEn STATES PATENT OFFICE.

\VILLLUI ll. TREMAINE AND ROBERT lV. PAIN, OF NElV YORK, N. Y.

MECHANICAL MUSICAL INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 552,796, dated January7, 1896.

Application filed June 21,1895. Serial No. 553,590. (No model.)

To all, whom, it may concern:

Be it known that we, XVILLIAM B. TRE- MAINE and ROBERT V. PAIN, of NewYork, in the county of New York and State of New York, have inventedcertain new and useful Improvements in Mechanical Musical Instruments,of which the following is a full, clear, and exact description. 7

This invention relates to mechanical musical instruments in whichperforated sheets of paper are used in combination with a series of airducts or passages leading to musical reeds, pipes or other soundingdevices, or to mechanism for operating the sounding devices, which arecaused to sound by the exhaustion or pressure of air, all of whichmusical instruments are well known.

lleretofore it has been very difficult if not impossible to run twoperforated musicsheets, each operating a separate and independentmusical instrument, synchronously or together for the two musicalinstruments controlled by the two perforated music-sheets to playtogether in unison, the difficulty being caused by the tendency of oneof the 1n usicsheets in traveling over the air-ducts for the operationof the sounding devices to get ahead orin advance of the other, by whichthe perforations in such advanced music-sheet would cause its soundingdevices to sound before these in the other music-sheet. This occurs froma variety of causes well understood and needing no particulardescription herein, and the object of the present invention is tocombine mechanism in such manner with the travel of two or moreperforated music-sheets, each controlling a separate or independentorgan, or bank-organ, or other musical instrument, that the two or moremusic-sheets will run or travel synchronously or together, in suchmanner that the music played on the several organs, or bank-organs, orother musical instruments controlled by the perforated music-sheets willbe rendered synchronously or together in point of time, enabling, forinstance, on one organ, or bank-organ, or other musical instrument theaccompaniment to be played and a solo or the melody or other part to beplayed 011 another organ orbank-organ, so that the musical piece beingplayed by the several instruments would be performed together or in thesame time, and the invention consists in the combination of two or moreorgans, or bank-organs, or other musical instruments, each operated orcontrolled by a separate or independent perforated music-sheet, andmeans for controlling the movements of each of said perforatedmusic-sheets, so that the two or more perforated music-sheets willtravel together, or in the same time, for the playing of the two or moreorgans or other musical instruments synchronously or together, allsubstantially as hereinafter fully described; and the invention alsoconsists of the construction and arrangement of the various parts of theapparatus for carrying out this invention, all substantially ashereinafter fully described, reference being had to the accompanyingsheets of drawings, in which is illustrated the present invention asarranged to operate the sounding devices of two separate and independentmusical organs, or bankorgans, or other musical instruments by twoseparate perforated music-sheets, the musical instruments not beingshown.

The drawings represent two perforated music-sheets, each being arrangedto operate in connection with all the necessary parts for running thesame fora separate organ, in connection with the parts of the presentinvention, the parts of one being the duplicate of the other, andarranged one above the other, the upper one representing one set orsystem, and the lower one the other set or system, and bothsubstantially lettered alike, the description of one answering fully forboth, there being also shown parts which connect the two systemstogether for each to be governed by the movements of the other, to causethe travel of the perforated music-sheets over the raceways or trackerranges to be synchronous orsimultaneous, so that the music of bothorgans or other musical instruments will be played together for theproper performance of the music arranged thereon.

I11 the drawings, Figure 1 is a central vertical section of theoperating parts of this invention, in connection with two perforatedmusicsheets and their operating mechanism, with parts broken out and inside view, for the operation of two perforated music-sheets inaccordance with this invention. Fig. 2 is an end view. Fig. 3 is apartial vertical section of the upper set or system and a front view ofthe lower set or system, showing some of the parts in differentpositions from that shown in Fig. 1.

In the drawings, A represents a perforated music-sheet in the upper setor system, and A the perforated musicsheet in the lower set or system,each secured to a separate music or delivery roll 13, and adapted totravel over a separate tracker range or raceway O and to be wound upon aseparate take-up roll I) in the operation of the instrument, eachraceway C having a row or series of air ducts or passages E, the passageof air through which,

when connected to the musical part of the instrument, causes the reeds,pipes or other sounding devices to sound by the exhaustion of air, allsubstantially as usual in mechanical musical instruments and needing nopar ticular description herein.

In the drawings the music-sheets, the music and take-up rolls andraceway are shown as broken off, the parts not being shown atone end,but constructed and arranged as usual in such instruments.

The journal a of the music-roll is detachably secured at its end to ashort shaft F, adapted to turn in bearings in arms 6 of a bracket G,secured to the main board or support H, and having on its end a pulleyJ, the turning of which shaft turns the music-roll with it.

The take-up roll D is arranged by its journal d to turn in a bearing ofa bracket K of the support II, and secured on the end of the roll is agear L, which is arranged to engage with a small gear or pinion M on theend of a short shaft N, arranged to turn in bearings in arms 6 of abracket P, secured to the supporting-board and having secured to itsother end a friction clutch or disk Q.

R is a shaft axially in the same line as the shaft N and arranged toturn in hearings in arms f secured to the support and to movelongitudinally back and forth therein within certain limits. On the endof this shaft R is a friction clutch or disk S which is opposite theother clutch Q on the shaft N and is arranged to bear again st theclutch and be held to such engagement by a flat spring T secured at g tothe support and bearing by its free end It against the outer end of theshaft R.

The shaft R of the lower system has two pulleys U V secured to it, one,V, of which is the driving-pulley and is to be connected by a belt toany suitable motive power, and the other pulley, U, is connected by abelt (not shown) to another pulley \V secured to the shaft R in theupper system, by which motion is communicated from the lower-shaft R tothe upper shaft R,,so that through the gear connections with theirrespective take-up rolls D these rolls are turned to wind theirrespective perforated music-sheets thereon and to cause the music-sheetsto travel over their respective raceways or tracker-ranges C.

The outer end of each perforated musicsheet is arranged for itsconvenient attachment to and detachment from its take-up roll in theusual manner, as is well known in these mechanical musical instruments,and which it is not deemed necessary to more particularly describe orshow in this application.

The music-sheet is first wound upon the music-roll and its outer endsecured to the take-up roll, and in the operation of the instrument themusicsheet travels over the raceway and is wound upon the take-up roll,and when all wound thereon it is unwound therefrom back onto themusic-roll and its end detached from the take-up roll, when themusic-roll with the music-sheet is removed from the instrument andanother placed thereon for the playing of another tune, as usual.

The rewinding of the music-sheet upon the 1nusicroll is accomplished bymechanism arranged on the shaft R, the moving of which puts the shaft inposition to be turned in the opposite direction, for the turning of themusic-roll in the right direction to reverse the movement of themusic-sheet, the shaft 1* connected to the music-roll being operated bya belt (not shown) which runs over a-pulley Y on the shaft R and anotherpulley J on the shaft F, and when the music-sheet is entirely rewoundupon the music-roll the shaft R is put in proper connection again toturn the take-up roll as before, all of which is as usual in thesemusical instruments and needs no particular description herein, as it isno part of the present invention.

B is a box secured to the support and having a chamber C from which theair is exhausted through a pipe I) by any suitable air-exhaustmechanism, and such as is generally employed in these musicalinstruments. In this chamber C is secured by one of its sides a smallpneumatic bellows E, its other side or board on being free to move toand from it, as usual, and on the end of this board m is secured a stripa, to the outer end of which is secured a stem or rod E, which extendsoutward through an air passage or opening G in the side or wall II ofthe box and arranged to be guided in its movements in a bearing in anarm J secured to the box side H, the rod extending beyond the arm Jhaving a shoulder or head 1'' with a spiral spring t on the stem betweenthe arm J and the head 7' to hold by its tension the rod outward, andthus the pneumatic bellows E closed, as shown in Fig. 1. are secured twodisks or valves K L, one, K, within the chamber 0, and the other, L,outside thereof, to respectively close or open the passage G to airpassing into the chamber as the one, K, or the other, L, respectivelybears or rests close upon and over the opening G in the movements of thepneumatic bellows E.

M is an air-passage through the side ll of the box into the pneumaticbellows E, in which is inserted a small tube "a, which projectsoutwardly therefrom.

On this stem F N ear the end of the raceway or trackerrange 0 beyond theline of air-passages E is an air-passage N extending inward a shortdistance and then longitudinally outward to the end of the raceway, inwhich is inserted a tube t, which projects outward, its end beingconnected to the outer end of the short tube 10 in the passage M topneumatic bellows by a short piece of preferably flexible tubing 10.

From the middle of the passage G is a passage P extending through theside H and lower end of the box B, and opens through the other side ofthe box into a large bellows Q, which is secured by one, y, of itsleaves to the outside of the box.

To the block a secured to the movable leaf R of this bellows Q ispivoted at Z) by one end a link S, its other end being pivoted at (7 toa vertical lever T pivoted at c to an arm U of the support, the lowerend of this lever being forked, as at f, Fig. 2, and freely straddlingthe shaft R, and arranged to bear at such end against the side of acollar V secured to the shaft R by a set-screw g.

To a block 7L secured to the movable leaf R of the bellows Q" in theupper system is pivoted at m one end of a link q pivoted by its otherend at n to the upper end of a ver tical lever lV, which is centrallypivoted at r to the support, its lower end being pivoted at t to one endof a link A pivoted by its other end at u to a block '0 to the movableleaf R of the bellows Q in the lower system, as shown.

In each perforated sheet near its edge w and extending along the lengthof the same at any desired regular intervals, and preferably in the samerelative positions in relation to the perforations representing themusic in the sheets, are perforations B and in each sheet theseperforations B are arranged in such a line longitudinally on the sheetthat in its travel over the raceway or tracker-range they will insuccession pass over the opening or passage N in the raceway ortracker-range. in locating these perforations on the musicsheet it ispreferable to have one at the beginning of each measure of the music,but such locations must be the same in all the music-sheets used.

With the parts in the positions shown in Fig. 1, with the air-exhaustmechanism of the musical instruments in operation, if the twomusic-sheets are then caused to travel from their music-rolls to theirtake-up rolls, as their perforations 0 pass over their respectiveairduets in the raceway, the music represented by the perforations inboth music-sheets will be played synchronously or together; but if, forinstance, the upper music-sheet should get somewhat ahead or in advanceof the lower music-sheet, so that one of its marginal perforations Bwould arrive at and be over its air-duct N in its raceway before thesame located marginal perforation B in the lower music-sheet would reachits corresponding air-duct N, immediately air will pass down theair-duct N in the upper raceway through its connecting-tubes o to intothe pneumatic bellows E, opening the same and moving the valves K and Lto open the passage G to the air-chamber C and close such opening to theoutside, as shown in Fig. 3, in the upper system, and in such operationof these two valves air would be exhausted from the bellows Q throughthe passage P into the exhaust-chamber 0, closing the bellows Q, whichwould swing the lever T connected thereto and cause its forked end topress against the collar V on the shaft R and move the shaftlongitudinally outward against its spring T, and with it its clutch Saway from its opposite clutch Q, disconnecting the two clutches, wheni11- stantly clutch Q and its shaft N would cease revolving, causing thetake-up roll B in connection therewith by its gear and musicsheet A tostop. At the same time the bellows Q would move the lever \V for it toopen the lower bellows Q, operating the lever T, attached to it, for itsforked arm to be moved back from the collar V on its shaft R, leavingthis lower shaft free for the pressure on it of its spring to hold itsclutch S in contact with the clutch Q on its gear-shaft N, and thus keepthe lower take-up roll in motion until its music-sheet movessufficiently for its marginal perforation B to come over the air-duct Nin its raceway, when immediately air passes down through such air-ductthrough its tubes 4; a into the pneumatic bellows E, and opening itmoves the valves K L to respectively open the passage G to theexhaust-chamber O and the passage P leading to the bellows Q, closingthe bellows by the exhaustion of air therefrom, swinging its lever T forits forked arm f to move and press upon the shaft-collar V. At the sametime the lower arm of the lever \V is swung inward, moving its upper armoutward and opening the upper bellows Q, causing its lever T to swingfor its forked arm f to move back and from the collar V on its shaft,allowing the spring T to move the shaft inward, and thus its clutch Sagainst and in. contact with the other clutch Q, communicating motion toits shaft and gear, turning the musie-roll and moving the uppermusic-sheet, which motion will then be in unison with the lowermusic-sheet, and so continuing until either one or the other gets inadvance again, when the same movement of the pneumatic bellows andlevers takes place, and disengagement of the clutches, stoppingwhichever music-sheet is in advance until the other catches up with it,as described, when through the movement of the lever XV an equilibriumis again established between the two systems, when they continue inunison as before, and so on.

In Fig. 3 the clutches in the upper system are shown as disconnected,and the clutches in the lower system as connected, indicating that themusic-sheet in the uppersystem is at rest and the music-sheet in thelower system in motion, and that as soon as the music-sheet in the lowersystem has moved into its position of unison with the upper music-sheet,causing its pneumatic bellows and lovers to operate as above described,the parts will re sume their same relative positions as shown in Fig. 1,when the two music-sheets will ravel again in unison as before.

Just below the passage N in the upper raceway is a passage D whichextends inward and then longitudinally outward to the end of the racewayalongside of the passage N, and has a small tube 3 in its outer end, towhich is secured a tube a preferably flexible, which extends downwardlytherefrom, its other end being secured to a short tube b which isinserted in a passage (Z in the side E of the lower exhaust-chamber box3,which passage d extends therein and then turns and opens into apneumatic bellows F secured in the exhaust-chamber C to its sideopposite to the pneumatic bellows E and in such position as to bear, asit is opened, against the pneumatic bellows E to close it. Also justbelow the passage N in the lower raceway is a similar passage D whichextends inward, then outward toward the end, having a tube 1 to which issecured a tube a preferably flexible, which extends upward, its otherend being secured to a short tube b in a passage (Pin the side 15 0f theupper exhaust-chamber box 13 and communicating with a pneumatic bellowsF secured in its exhaust-chamber to its side opposite to its pneumaticbellows E and in position to bear, as it is opened, against thepneumatic bellows E to close it. The object of this part of theinvention is to insure the operation of the pneumatic bellows E in eachsystem in restoring the equilibrium of the two systems by the travel inunison of the two music-sheets, if one or the other should be in.advance. If the marginal perforations '3 in the advanced music-sheetcome over the passage I) in its raceway, air enters such passage andpasses along through it and its connecting-tultms to the pneumaticbellows I in the opposite system, and opening the same it pressesagainst its opposite pneumatic bellows E and assists in closing it. Thisinsures the operation of the pneumatic bellows E in either system, tocause the disconnection of its clutches when the music-sheet in thesystem opposite thereto is in advance, and also insures such operationof the parts in case the marginal. perforation 13 should by any reasonbecome enlarged, which enlargement would interfere with action of thepneumatic-bellows E.

This invention is applicable as well to control the travel synchronouslyof two or more sheets of flexible material for any purpose other thanmechanical musical instruments, and therefore the invention is not to belimited to its application to mechanical musical instruments.

This invention is shown in the present instance to be used in connectionwith musical instruments operated by the exhaustion of air,

preferably by the main exhaust-bellows of the musical instruments, butit is not intended to limit the invention to its operation by the exhaustion of air, as it can be operated as well by air-pressure orforce-bellows, in such case the parts being changed for suchforce-bellows in ways that are well known by makers of such musicalinstruments and needing no particular description herein.

The clutches S and Q in the present instance are frictional clutches,which are preferable for obvious reasons for the instruments to whichthis invention is specially to be applied, although as is obvious anysuitable clutch can be used to communicate motion from one shaft to theother.

The operation of this invention as described for two or more perforatedmusic-sheets operating two or more musical instruments is so quick andresponsive in its action that even if any one of the perforatedmusic-sheets does get in advance the perforated music-sheets practicallytravel together or as one, so that the musical composition played by themusical instruments applied thereto or connected therewith is playedsynchronously and accurately in reference to its time.

Having thus described our invention, what we claim is- 1. In amechanical musical instrument, in combination, two or more perforatedmusic sheets, mechanism for operating each music sheet independent ofthe other in connection with an independent an (1 separate organ,bankorgan, or other musical instrument, and mech anism controlled by eachmusic sheet to regulate and control the movement of the other musicsheet or sheets, so that they all will travel together, to perform themusic represented by each. sheet synchronously or together.

2. In a mechanical musical. instrument, in combination, two or moreperforated music sheets, raceways or tracker ranges over which saidperforated music sheets are arranged to travel, one to each music sheet,air ducts or passages in each raceway or tracker range, arranged tocommunicate with an independent or separate set or series of soundingdevices for the sounding of the same, and mechanism controlled andcaused to be operated by each perforated music sheet, to regulate an dcontrol the travel of the other music sheet or sheets, for all the musicsheets to travel together so that the music performed on the severalmusical instruments in connection therewith will be performedsyl'ichronously or together.

3. In combination, two or more sheets of flexible material,raceways orrests over which said sheets are arranged to travel, one raceway to eachsheet, and mechanism controlled and caused to be operated by each sheet,to regulate and control the travel of the other sheet or sheets, forsaid sheets to travel synchronously or together, over said raceways orrests.

4:. In combination, asheet of flexible material, a raceway or rest overwhich said sheet is arranged to travel, an air duct or passage in suchraceway, a perforation in said sheet in line with said air duct, an airchamber, a pneumatic bellows in said air chamber in communication withsaid air d not or passage, a passage into said chamber from the outside,abellows outside of said chamber, a passage forming communication withsaid passage leading to said chamber and said bellows, a valve connectedto said pneumatic bellows adapted to close and open said air chamberpassage, a lever connected by one arm to said outside bellows, arotating shaft adapted to move back and forth longitudinally in itsbearings and to be moved in one direction by the other arm of saidlever, a spring bearing on said shaft, a disk or clutch on the end ofsaid shaft arranged and adapted to be engaged with another clutch oranysuitable operating device.

In combination, in a mechanical musical instrument, a perforated musicsheet, a raceway or tracker range over which said perforated music sheetis arranged to travel, air ducts or passages in said raceway or trackerrange arranged to communicate with soundin g devices for the sounding ofthe same, an air duct or passage in said raceway, a separate perforationin the music sheet for such air duct or passage, an air chamber, apneumatic bellows in said air chamber in communication with said'airduct or passage, a passage into said air chamber from the outside, abellows outside of said chamber, an air passage forming communicationwith said passage and said bellows outside of said air chamber, avalveconnected to said pneumatic bellows adapted to close and open said airpassage leading to the air chamber, a lever connected by one arm to saidoutside bellows, a rotating shaft adapted to engage with the other armof said lever, and to move back and forth longitudinally in itsbearings, a spring bearing on said shaft, a disk or clutch on the end ofsaid shaft, another rotating shaft, a disk or clutch on the end of saidlatter shaft, adapted to engage with said first disk or clutch, a gearon said latter shaft, a roll on which said music sheet is adapted to bewound, and a gear on said roll arranged to engage with said shaft gear.

6. In a mechai'iicalmusical instrument, two or more perforated musicsheets, raceways or tracker ranges over which said perforated musicsheets are arranged to travel, one raceway to each music sheet, airducts or passages in each raceway to each music sheet arranged tocommunicate with. sounding devices for the sounding of the same by thepassage of air through the perforations in said sheets and air ducts, incombination with two sets or systems for the controlling by eachperforated music sheet in its travel over its respective raceway of theother perforated music sheet or sheets for the purposes described, eachset or system consisting of the following instrumentalities: a separateperforation in the music sheet, an air duct or passage in its racewayfor such perforation, an air chamber, a pneumatic bellows in said airchamber in communication with said air duct, a passage communicatingwith said air chamber from the outside, means for opening and closingsaid air passage leading to the air chamber by the movements of thepneumatic bellows, an air passage communicating with said latter airpassage and a bellows outside of said air chamber a lever connected byone arm to said outside bellows, a rotating shaft arranged to move backand forth longitudinally in its bearings, and to be acted upon in one ofits movements by said lever, a spring bearing on said shaft, a gearsecured to said shaft, another rotating shaft adapted to engage anddisengage with said former shaft, a roll on which said music sheet isadapted to be wound, and a gear on said roll arranged to engage withsaid shaft gear, and a pivoted lever connected by its ends respectivelyto the outside of said bellows in each system, connectingv the systemstogether for the purpose described.

7. Ina mechanical musical instrument, two or more perforated musicsheets, raceways or tracker ranges over which said perforated musicsheets are arranged to travel, one race way to each music sheet, airducts or passages in each raceway or tracker range, arranged tocommunicate with sounding devices for the sounding of the same by thepassage of air through the perforations in said sheets and air ducts, incombination with two or more sets or systems for the controlling by eachperforated music sheet in its travel over its respective raceway of theother perforated music sheet or sheets for the purposes described, eachset or system consisting of the following instrumentalities: a separateperforation in the music sheet, an air duct or passage in its racewayfor such perforation, an air chamber, a pneumatic bellows in said airchamber in communication with said air duct, a passage communicatingwith said air chamber from the outside, a valve connected to saidpneumatic bellows adapted to-open and close said air passage leading tothe air chamber by the movements of the pneumatic bellows, an airpassage communicating with said latter air passage and a bellows outsideof said air chamber, alever connected by one arm to said outsidebellows, a rotating shaft arranged to move back and forth longitudinallyin its bearings and to be acted upon in one of its movements by saidlever, a spring bearing on said shaft, a gear secured to said shaft, adisk or clutch on the end of said shaft, another rotating shaft, a diskor clutch on the end of said latter shaft adapted to engage with theother disk or clutch, a gear on said latter shaft, a roll on which saidmusic sheet is adapted to be wound, and a gear ITS on said roll arrangedto engage with said shaft gear; and a pivoted lever connected by itsends respectively to the outside of said bellows in each systemconnecting the two or more systems together for the purpose described.

8. In a mechanical musical instrument, two or more perforated musicsheets, raceways or tracker ranges over which said perforated musicsheets are arranged to travel, one raceway to each music sheet, airducts or passages in each raceway or tracker range arranged tocommunicate with sounding devices for the sounding of the same by thepassage of air through the perforations in said sheets and air ducts, incombination with two or more sets or systems for the controlling by eachperforated music sheet in its travel over its respective raceway of theother perforated music sheet or sheets for the purposes described, eachset or system consisting of the following instrumentalities: a separateperforation in the music sheet, an air duct or passage in its racewayfor such perforation, an air chamber, a pneumatic bellows in said airchamber in communication with said air duct, a passage communicatingwith said air chamber from the outside, means for opening and closingsaid air passage leading to the air chamber by the movements of thepneumatic bellows, an air passage communicating with said latter airpassage and a bellows outside of said air chamber, a lever connected byone arm to said outside bellows, a rotating shaft arranged to move backand forth longitudinally in its bearings and to be acted upon in one ofits movements by said lever, a spring bearing on said shaft, a gearsecured to said shaft, another rotating shaft adapted to engage anddisengage with said former shaft, a roll on which said music sheet isadapted to be Wound, and a gear on said roll arranged to engage withsaid shaft gear, a second air duct in said raceway in the line, in whichthe music sheet travels with the former air duct, and a tube or airconductor forming communication with said second air duct and theoutside bellows in the other set or system; and a pivoted leverconnected by its ends respectively to the outside of said bellows ineach system connecting the two or more systems together for the purposedescribed,

9. In a mechanicalmusicalinstrument, two or more perforated musicsheets, raceways or tracker ranges over which said perforated musicsheets are arranged to travel, one raceway to each music sheet, airducts or passages in each raceway or tracker range arranged tocommunicate with sounding devices for the sounding of the same by thepassage of air through the perforations in said sheets and air ducts, incombination with two sets or systems for the controlling by eachperforated music sheet in its travel over its respective raceway, of theother perforated music sheet or sheets for the purpose described, eachset or system consisting of the following instrumentalities: a separateperforation in the music sheet, an air duct or passage in its racewayfor such perforation, an air chamber, a pneumatic bellows in said airchamber in communication with said air duct, a passage communicatingwith said air chamber from the outside, a valve connected to said pneumatic bellows adapted to open and close said air passage leading tothe air chamber by the movements of the pneumatic bellows, an airpassage communicating with said latter air passage and a bellows outsideof said air chamber, a lever connected by one arm to said outsidebellows, a rotating shaft arranged to move back and forth longitudinallyin its bearings, and to be acted upon in one of its movements by saidlever, a spring bearing on said shaft, a gear secured to said shaft, adisk or clutch on the end of said shaft, another rotating shaft, a diskor clutch 011 the end of said latter shaft, adapted to engage with theother disk or clutch, a gear on said latter shaft, a roll on which saidmusic sheet is adapted to be wound, and a gear on said roll arranged toengage with said shaft gear, a second air duct in said raceway in theline in which the music sheet travels with the former air duct, and atube or air conductor forming communication with said second air ductand the outside bellows in the other set or system, and a pivoted leverconnected by its ends respectively to the outside of said bellows ineach system. connecting the systems together for the purpose described.

10. In combination, a sheet of flexible material, a raceway or rest overwhich said sheet is arranged to travel, an air duct or passage in suchraceway, a perforation in said sheet in line with said air duct, an airchamber, a pneumatic bellows in said air chamber in communication withsaid air duct or passage, a passage into said chamber from the outside,a bellows outside of said chamber, a passage forming communication withsaid passage leading to said chamber and said bellows, a valve connectedto said pneumatic bellows adapted to close and open said air chamberpassage, a rotating shaft adapted to move back and forth longitudinallyin its bearings and connected to said bellows to move said shaft in onedirection, a spring bearing on said shaft, and another rotating shaft,said shafts being arranged to engage and disengage with each other.

11. In combination, a sheet of flexible material, a raceway or rest overwhich said sheet is arranged to travel, an air duct or passage in suchraceway, a perforation in said sheet in line with said air duct, an airchamber, a pneumatic bellows in said air chamber in communication withsaid air duct or passage, a passage intosaid chamber from the outside, abellows outside of said chamber, a passage forming communication withsaid passage leading to said chamber and said bellows, a

valve connected to said pneumatic bellows adapted to close and open saidair chamber passage,a rotating shaft adapted to move back and forthlongitudinally in its bearings and connected to said bellows to movesaid shaft in one direction, a spring bearing on said shaft, a disk orclutch on the end of said shaft arranged and adapted to be engaged withanother clutch or any suitable operating de vice.

12. In combination,in a mechanical musical instrument a perforated musicsheet, a raceway or tracker range over which said perforated music sheetis arranged to travel, air ducts or passages in said raceway or trackerrange arranged to communicate with sounding devices for the sounding ofthe same, an air duct or passage in said raceway, a separate perforationin the music sheet for such air duct or passage, an air chamber, apneumatic bellows in said air chamber in communication with said airduct or passage, a passage into said air chamber from the outside, abellows outside of said chamber, an air passage forming communicationwith said passage and said bellows outside of said air chamber,a valveconnected to said pneumatic bellows adapted to close and open said airpassage leading to the air chamber, a rotating shaft arranged to moveback and forth longitudinally in its bearings and connected to saidbellows to move said shaft in one direction, a spring bearing on saidshaft, a disk or clutch on the end of said shaft, another rotatin shaft,a disk or clutch on the end of said latter shaft, adapted to engage withsaid first disk or clutch, a gear on said latter shaft, a roll on whicha music sheet is adapted to be wound, and a gear on said roll arrangedto engage with said shaft gear.

13. In a mechanical musical instrument, two or more perforated musicsheets, raceways or tracker ranges over which said perforated musicsheets are arranged to travel, one raceway to each music sheet, airducts or passages in each raceway to each music sheet, arranged tocommunicate with sounding de vices for the sounding of the same by thepas sage of air through the perforations in said sheets and air ducts,in combination with two sets or systems for the controlling by eachperforated music sheet in its travel over its respective raceway of theother perforated music sheet or sheets for the purposes described, eachset or system consisting of the following instrumentalities: a separateperforation in the music sheet, an air duct or passage in its racewayfor such perforation, an air chamber, a pneumatic bellows in said airchamber in communication with said air 'duct, a passage communicatingwith said air chamber from the outside, means for opening and closingsaid air passage leading to the air chamber by the movements of thepneumatic bellows, an air passage communicating with said latter airpassage and a bellows out-side of said air chamber, a rotating shafttogether for the purpose described.

14:. In a mechanical musical instrument, two or more perforated musicsheets, raceways or tracker ranges over which said perforated musicsheets are arranged to travel, one raceway to each music sheet, airducts or passages in each raceway to each music sheet arranged tocommunicate with sounding devices for the sounding of the same by thepassage of air through the perforations in said sheets and air ducts, incombination with two sets or systems for the controlling by eachperforated music sheet in its travel over its respective raceway of theother perforated music sheet or sheets for the purposes described, eachset or system consisting of the following instrumentalities: a separateperforation in the music sheet, an air duct or passage in its racewayfor such perforation, an air chamber, a pneumatic bellows in said airchamber in communication with said air duct, a passage communicatingwith said air chamber from the outside, means for opening and closingsaid air passage leading to the air chamber by the 1n ovements of thepneumatic bellows, an air passage communicating with said latter airpassage and a bellows outside of said air chamber, a lever connected byone arm to said outside bellows, a rotating shaft arranged to move backand forth longitudinally in its bearings, and to be acted upon in. oneof its movements by said lever, a spring bearing on said shaft, a gearsecured to said shaft, another rotating shaft, adapted to engage anddisengage with said former shaft, a roll on which a music sheet isadapted to be wound, and mechanism connecting the outside bellows of thesystems together for the purpose described.

15. In a mechanical musical instrument, two or more perforated musicsheets, raceways or tracker ranges over which the perforated musicsheets are arranged to travel, one raceway to each music sheet, airducts or passages in each raceway or tracker range, arranged tocommunicate with sounding devices for the sounding of the same by thepassage of air through the perforations in said sheets and air ducts, incombination with two sets or systems for the controlling by eachperforated music sheet in its travel-over its respective raceway of theother perforated music sheet or sheets for the purpose described, eachset or system consisting of the following instrumentalities: a separateperforation in the music sheet, an air duct or passage in its racewayfor such perforation, an air chamber, a pneumatic bellows in said airchamber in communication with said duct, a passage communicating withsaid air chamber from the outside, a valve connected to said pneumaticbellows adapted to open and close said air passage leading to the airchamber by the move- -ments of the pneumatic bellows, an air passagecommunicating with said latter air passage and a bellows outside of saidair chamber, a rotating shaft arranged to move back and forthlongitudinally in its bearings connected to said bellows to move saidshaft in one direction, a spring bearing on said shaft, a gear securedto said shaft, a disk or clutch on the end of said shaft, anotherrotating shaft said shafts being arranged to engage and disengage witheach other, a roll on which said.

music sheet is adapted to be wound, and connected to said latter shaftfor operation

